What are the 2 main parts of the nervous system and what do they do?

Answer 1

The peripheral and central nervous systems (PNS and CNS) are the two major branches of the nervous system.

The CNS is where the most sophisticated processing occurs. It is where information from all senses are integrated in time; where memories are formed and recalled; where movement commands are planned and sent to lower motor neurons; where emotion is regulated; where mental thoughts originate; and where your personality comes from.

The PNS system acts as a 'mediator' between the body and the central nervous system. It conveys motor commands to muscle groups and it relays sensory information to the central nervous system. The peripheral nervous system also 'micro-manages' things going on in the body like how fast the heart beats; or how much acid to secrete in order to digest that hamburger. For some bodily functions, the peripheral nervous system handles this completely independently from the central nervous system (digestive processes is a pertinent example). While for other functions, the central nervous system will influence it. The extent of influence usually depends on how complicated the behavior needs to be. If you are fleeing in panic from a rabid dog, for example, your brain will boost your body's ability to run and think quickly. It will do this by regulating bodily systems related to heart rate, blood pressure, and hormone secretion - all via the PNS.

Answer 2

The Central Nervous System which includes the the brain through/to the spinal cord and the Peripheral Nervous System which includes the nervous veins out/ away from the spinal cord but connected to it, its mostly all and a whole lot of veins in your hands, teeth skin, mostly everywhere that is not included of the Central Nervous System.

Mr. Smart :)

Answer 3

Central nervous system- brain and spinal cord

Peripheral nervous system- autonomic ganglion, cranial nerves and peripheral nerves